Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Appearance Patterns of Freshwater Fish in Western DMZ Adjacent Areas, Gyeonggi-do, Korea

서부 DMZ 인접지역의 담수어류 출현양상

  • Received : 2015.03.13
  • Accepted : 2015.03.23
  • Published : 2015.03.31
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Abstract

Appearance patterns of freshwater fish were investigated in the western Demilitarized Zone (DMZ) adjacent areas near Imjin River in Gyeonggi-do, Korea, of 2014. A total of 61 species belonging to 14 families were found in the river during the survey. The dominant and subdominant species were Zacco platypus (Relative abundance, 20.3%) and Zacco koreanus (12.6%), respectively. Other abundant species include Rhinogobius brunneus (9.2%), Pungtungia herzi (4.4%), Acheilognathus yamatsutae (4.4%), and Pseudogobio esocinus (4.0%). Among the residing species, 24 species (39.3%) were endemic to Korea; and 1 species, Carassius cuvieri, was non-indigenous species. Hemibarbus mylodon is a natural monument, and Lethenteron reissneri, Acheilognathus signifer, Pseudopungtungia tenuicorpa, Gobiobotia brevibarba, G. macrocephala, and G. naktongensis are endangered species in Korea. In addition, Anguilla japonica and Plecoglossus altivelis are catadromous and amphidromous species, respectively. Among the investigated sites, the lower part of Sami Stream (St. 5, 6) and Gunnarm-dam region (St. 11, 14) are particularly valuable for the conservation of species diversity, because many fish species (33~42 species) including a natural monument and several endangered species inhabit in these regions.

서부 DMZ 인접지역의 담수어류 출현양상을 밝히기 위하여 2014년 조사를 실시하였다. 조사기간 동안 채집된 어류는 14과 61종이었고, 우점종은 피라미 (Zacco platypus, 상대풍부도 20.3%), 아우점종은 참갈겨니 (Z. koreanus, 12.6%)였고, 그 밖에 밀어 (Rhinogobius brunneus, 9.2%), 돌고기 (Pungtungia herzi, 4%), 줄납자루 (Acheilognathus yamatsutae, 4.4%), 모래무지 (Pseudogobio esocinus, 4.0%) 등의 순으로 우세하게 출현하였다. 출현종 중 고유종은 25종(40.1%)이었고, 외래어종은 떡붕어 (Carassius cuvieri) 1종이었다. 천연기념물은 어름치 (Hemibarbus mylodon) 1종이었고, 멸종위기야생생물은 I급의 흰수마자 (Gobiobotia naktongensis)와 II급의 다묵장어 (Lethenteron reissneri), 묵납자루 (A. signifer), 가는돌고기 (Pseudopungtungia tenuicorpa), 돌상어 (G. brevibarba), 꾸구리 (G. macrocephala) 6종이었으며, 회유성 어종은 뱀장어 (Anguilla japonica, 강하성)와 은어 (Plecoglossus altivelis, 양측회유성) 2종이 채집되었다. 조사지역 중 사미천 하류부(St. 5, 6)와 군남댐 인근(St. 11, 14)은 서식지가 다양하고 인위적 교란이 적어 33~42종의 많은 종이 서식하고 있었는데, 특히 천연기념물 1종과 멸종위기야생생물 3~5종이 집단으로 서식하고 있어 보전가치가 매우 높았다.

Keywords

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